[vsnet-grb-info 13545] GRB 130612A: NOT optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14878
SUBJECT: GRB 130612A: NOT optical observations
DATE:    13/06/12 04:50:12 GMT
FROM:    Dong Xu at DARK/NBI  <dong.dark at gmail.com>

P. Jakobsson (U. Iceland), D. Xu (DARK/NBI), D. Malesani (DARK/NBI),
K. Mikkelsen (U. Oslo) report on behalf of a larger collaboration:

We observed the optical afterglow of GRB 130612A (Racusin et al., GCN
14874; Melandri et al., GCN 14875) using the 2.5-m Nordic Optical
Telescope (NOT) equipped with the ALFOSC camera. We obtained 4x300s
R-band images with a median time 04:06:09 UT on 12 June 2013 (i.e.
0.73 hr after the burst).

The optical afterglow was clearly detected with R ~ 20.3 mag
calibrated with nearby stars in the USNO B1 catalog.